Attachment for shuttle-changing looms.



APPLICATTON FILED DEC-22,1915- Z 1 9 1 7n 2 M M m t H .w a D 2SHEETS-SHEET lonms nsrsns m rnomundm. WASHING run: a c

A. F. IVIORELL. ATTACHMENT FOR SHUTTLE CHANGING LOOMS.

APPLICATION FILED DEC. 22,1915.

Patented Mar. 27, 1917.

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ALFRED F. MORELL, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO OROMPTON &KNOWLES LOOM WORKS, 0F WORCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

ATTACHMENT FOR SHUTTLE-CHANGING LOOMS.

To all whom it may concern:

Be it known that I, ALFRED F. MORELL, a citizen of the United States,residing at Worcester, in the county of Vorcester and State ofMassachusetts, have invented a new and useful Attachment forShuttle-Changing Looms, of which the following is a specification.

This invention relates to an attachment for shuttle changing looms,particularly designed for withdrawing the picker check from operativepositionpreliminary to a shuttle change.

The invention is shown as applied to a loom of the type described inUnited States Letters Patent No. 1,150,477, granted to Wyman and Morellon August 17 1915. In this type of loom a plurality of spare shuttles isprovided, together with weft detecting devices which control thetransfer of a fresh shuttle upon the substantial or complete exhaustionof filling in the active shuttle. A springactuated picker check is usedto position the shuttle within the shuttle box, the check being normallypositioned closely adjacent to the end of the shuttle. It has been foundthat the picker when thus positioned sometimes interferes with themovements of the shuttles during the transfer operation.

It is the object of my present invention to avoid this difficulty byproviding means for withdrawing the picker check from its normalposition preliminary to the change of shuttles.

In the embodiment of my invention herein shown, this withdrawal of thepicker check to inoperative position is controlled by the regular weftdetecting mechanlsm of the loom, which may be of any usual type and maybecome operative on either substantial or complete exhaustion of theweft in the active shuttle.

My invention further consists in certain arrangements and combinationsof parts which will be hereinafter described and more particularlypointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which-Figure 1 is a front elevation of certain parts of a loom with myattachment applied thereto;

Specification of Letters Batent. Patgntgfl lit 2], 191?.

Application filed December 22, 1915.

Serial No. 68,279.

Fig. 2 is a right-hand end elevation of the parts shown in Fig. 1;

Fig. 3 is a top plan View of the picker check and the devices forwithdrawing the same from operative position;

Fig. 4; is a right-hand side elevation of the operating cam;

Fig. 5 is a detailed view of the yielding connection through which thecam is operated, and

Fig. 6 is a detailed side elevation of the operating lever and stand.

Referring to the drawings, a portion of the loom frame is indicated at10, the lay at 11, the picker stick at 12 and the picker at 13. The layis supported upon the usual sword 14.

The picker check shown in the drawings comprises an arm 15 (Fig. 3)pivoted at 16 to a stand 17 carried by the lay 11. A spring 18 (Fig. 1)normally positions the picker check as shown in full lines in Fig. 3. Aleather strap or buffer 19 is stretched across the face of the arm 15 toprovide a cushion for the picker stick. The picker check thus forms acushioned yielding stop for the shuttle and also positions the pickerclosely adjacent to the end of the shuttle after it is boxed. All of theparts thus far described are old in the art and form no part of myinvention.

As above stated, the position of the picker 13 closely adjacent to thepoint of the shuttle has been found to interfere with the movements ofthe shuttles during the transfer operation. I will now describe theattaohment by which the picker check is withdrawn from operativeposition preliminary to the transfer of the shuttles, thus permittingthe picker stick 12 and picker 13 to move back away from the shuttlepoint.

An operating lever 20 (Fig. 6) is pivoted upon a stand 21 carried by thelay 11 and is connected by a link 22 (Figs. 1 and 3) to the arm 15 ofthe picker check. An operating cam 23 is pivoted at 24: upon the loomframe 10 and is connected by a link 25 to an arm 26 secured to a rockshaft 27 mounted in bearings 28 on the frame 10. The shaft 27 forms apart of the regular weft detecting mechanism fully described in thepatent to WVyman and Morell above identified. For the purposes of thisappli- .undercertain conditions.

cation it is sufiicient to state that the shaft is given a partialrotation in the direction of the arrow a (Fig. 2), whenever the weftdetecting mechanism calls for a change of shuttles.

The cam 23 is normally below the path of movement of the lever 20, asshown in full lines in Fig. 2, but is raised whenever the weft detectingmechanism calls for a transfer of shuttles. In accomplishing this resultthe arm 26 is moved by the shaft 27 and acts through the link 25 to liftthe cam 23 tothe position indicated in dotted lines in Figs. 2 and 4. Inthis position, the side of the cam engages thelower end of the lever 20,forcing it to the right, and thereby moving the link 22 (Fig. 3) to theleft as indicated by the arrow 6. Such movement of the link withdrawsthe picker check to the position indicated in dotted lines in Fig. 3.

In order to prevent breakage of parts ifthe upward movement of the cam23 is obstructed I find it desirable to construct the link 25 in such amanner that it may yield One form of yielding link is shown in Fig. 5 inwhich the two parts 25 and 25 are slidably connected. The minimum lengthof the link is determined by the position of the collar 25 and the partsare normally contracted to the minimum length by the spring 25. If themovement of the cam 23 is obstructed the link will expand, placingtension upon the cam and moving it to its upper position as soon as theobstruction is removed.

The operation of the device will be clear from the detailed descriptiongiven but may be concisely stated as follows WVhenever the weftdetecting mechanism indicates a change of shuttles the cam 23 will beraised into the path of the lever 20. The shuttle will enter the boxwith the picker check in its normal position, but as the lay movesforward the lever 20 will be engaged by the cam 23 and the picker checkwill be withdrawn, this withdrawal occurring between the boxing of theshuttle and the effective operation of the transfer mechanism to changethe shuttles. As the lay thereafter moves backward the picker check willbe released and will return to its normal position.

Having thus described my invention it will be evident that changes andmodifications can be made therein by those skilled in the art withoutdeparting from the spirit and scope thereof as set forth in the claimsand I do not wish to be otherwise limited to the details hereindisclosed.

What I claim is 1. In a shuttle changing loom, in combination, a picker-check, a member effective to cause withdrawal of said check before ashuttle change, a cam mounted on the loom frame and normally removedfrom the path of said member, and weft-controlled mechanism for movingsaid cam into the path of said member upon substantial or completeexhaustion of weft in the running shuttle.

2. In a shuttle changing loom, in combination, a picker check, a springeffective to cause said check to stop said shuttle and also to maintainsaid check in operative position, and devices movable by weft-controlledmeans to operative and inoperative positions efl'ective when operativelypositioned to positively withdraw said check against the pressure ofsaid spring prior to a shuttle change.

3. In a shuttle-changing loom, in combination, a picker check, a springfor moving said check to operative position, and means for moving saidcheck backward against the pressure of said spring preliminary to ashuttle change, said means including an operating cam movable intooperative position by a weft-controlled actuating device, said cam andsaid actuating device being yieldingly connected whereby movement ofsaid cam may be delayed.

4. In a shuttle-changing loom, in combination, .a lay, a spring-actuatedpicker check and a pivoted lever both mounted on said lay, a linkconnecting said lever to said check, a cam mounted on the loom frame andnormally removed from the path of said lever, and an actuating deviceconnected to said cam, said device being controlled by weft-detectingmechanism effective to move said cam to operative position uponsubstantial or complete exhaustion of the weft in the active shuttle.

In testimony whereof I have hereunto set my hand.

ALFRED F. MORELL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner 01' Patents,

Washington, I). 0.

